SN65LBC174A-EP Datasheet, PDF (5/19 Pages) Texas Instruments – QUADRUPLE RS-485 DIFFERENTIAL LINE DRIVER

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SN65LBC174A-EP
QUADRUPLE RS-485 DIFFERENTIAL LINE DRIVER
SLLS732 – OCTOBER 2006 – REVISED DECEMBER 2006
Switching Characteristics
over recommended operating conditions
PARAMETER
TEST CONDITIONS
t_PLH Propagation delay time, low- to high-level output
t_PHL Propagation delay time, high- to low-level output
t_r
Differential output voltage rise time
t_f
Differential output voltage fall time
R_L = 54 Ω, C_L = 50 pF,
See Figure 4
T_A=25°C
T_A= -55°C to 125°C
T_A=25°C
T_A= -55°C to 125°C
T_A=25°C
T_A= -55°C to 125°C
T_A=25°C
T_A= -55°C to 125°C
t_sk(p) Pulse skew |t_PLH – t_PHL|
t_sk(o) Output skew⁽¹⁾
t_sk(pp) Part-to-part skew⁽²⁾
t_PZH
Propagation delay time, high impedance to
high-level output
t_PHZ
Propagation delay time, high-level output to high
impedance
t_PZL
Propagation delay time, high impedance to
low-level output
t_PLZ
Propagation delay time, low-level output to high
impedance
See Figure 5
See Figure 6
MIN TYP MAX UNIT
4.0
8 11 ns
4.0
16 ns
4.0
8 11 ns
4.0
16 ns
3 7.5 11 ns
3
24 ns
3 7.5 11 ns
3
24 ns
0.6
ns
0.6
2
ns
3
ns
25 ns
25 ns
30 ns
20 ns
(1) Output skew (t_sk(o)) is the magnitude of the time delay difference between the outputs of a single device with all of the inputs connected
together.
(2) Part-to-part skew (t_sk(pp)) is the magnitude of the difference in propagation delay times between any specified terminals of two devices
when both devices operate with the same input signals, the same supply voltages, at the same temperature, and have identical
packages and test circuits.
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